Dilmurodovich, Niyozov E., et al. "Ir Spectroscopy of Thickening Polymer Composition Pellicles." JournalNX, vol. 8, no. 05, 2022, pp. 6-9, doi:10.17605/OSF.IO/5DF8H.
The IR spectra of carboxymethyl starch (CMC) and its composition have been studied.